dm thin: fix a race in thin_dtr

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commit 17181fb7a0 upstream.

As long as struct thin_c is in the list, anyone can grab a reference of
it.  Consequently, we must wait for the reference count to drop to zero
*after* we remove the structure from the list, not before.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Mikulas Patocka 2014-11-05 17:00:13 -05:00 • committed by Greg Kroah-Hartman

parent 2409f5131d

commit ffcc89dbcb

1 changed files with 3 additions and 3 deletions

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drivers/md/dm-thin.c

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